Valve starting shock wheel



Jan. l1, 1944. F, N LARSON 2,338,725

VALVE STARTING SHOCK WHEEL Filed NOV. 24, 1942 #ader/bl J/es'on, Lof/son.

lNvENToR BY /m ATTORNEY Patented Jan. 11, 1944 UNITED STATIES PATENT GFFICE 2,338,725 vALvE STARTING SHOCK WHEEL 'Frederick Nelson Larson, United States Navy Application November 24, 1942, Serial No. 466,824

Claims. (C1. 137-139) (Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) a means intended to be left permanently attached.vr

to the stem of a valve which is ordinarily diii-- cult to operate, thus making it easy to initiate opening or closing movement of the valve.

A4 further object of this invention is to provide a means to be permanently attached to the valve stem and make it easy to open or close the valve without the use of any temporarily attached wrench or lever. Many times valves are placed in locations that are diicultv of access as well as in locations where it is impossible to temporarily attach a sumciently long lever to exert any substantial amount of force thereon, but with this invention valves in such difcult locations can be easily opened or closed without the necessity of any temporarily attached long levers thereon.

A further object of this invention is to provide avalve opening and closing means which may be made in several forms according to the particular needs of the valve to which it is to be attached.

With the foregoing and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter described and illustrated in the drawing, in which:

Fig. 1 is an elevational view of the preferred form of the valve starting shock wheel of this invention;

Fig. 2 is a top plan view of a modied form of sleeve for connecting the flywheel to the valve stem;

Fig. 3 is a sectional view on line 3,-3 of Fig. 2.;

Fig. 4 is a projected view of Fig. 3;

Fig. 5 is a sectional view of another form of sleeve; and

Fig. 6 is a projected view of Fig. 5.

There is shown at III the valve starting shock wheel of this invention for initiating rotation of the valve stem I I attached to a valve (not shown). This valve starting shock wheel includes a handle wheel I2 on the top end I3 of a shaft I4.

Mounted on this shaft I4 is a flywheel I5 while the lower end I6 of the shaft I4 extends into one end of a sleeve Il, the other end of the sleeve I1 being secured as by a pin I8 to the valve stem I I. The sleeve Il is provided with a slot 28 which,

as shown, extends about 110 cireumferentially thereabout and which may be provided at each end thereof, if desired, with short longitudinal slots 2I and 22 connected thereto.

The heavysboss or pin 23 is secured to the ily-- wheel shaft I4 and extends into the slot 20 of sleeve I1, the size of the pin 23 being such that it may move radially within the length of the -slot 20 and longitudinally into either slot 2I or 22, a spring .24 being provided between the flywheel I5 and the sleeve II to move the pin 23 into either slot 2I or 22 when the shaft I4 is at such an angle that gravity will not move it into the longitudinal slot if desired.

In operation, the valve stem I I may be rotated in an appropriate direction to open the valve by placing the slot 2I or 22 of sleeve rI'I over the pin 23 and manually manipulating the Wheel I2. Should the valve be stuck or too diiiicult to move in this manner, the wheel I2 may be lifted or moved to raise the pin 23 out of slot 2| or 22 and into the slot 20. Then the periphery of handle wheel I2 is grasped and rotated as rapidly as desired, causing the rotation of the shaft I4 and the flywheel I5. The pin 23 will then travel at a rapidly increasing rate until it reaches the opposite end of its slot 20 and deliver a hammer blow against the end of the slot in the sleeve I'I which is thus transmitted through the pin I8 and the valve stem II to initiate the starting movement of the valve. When the pin 23 is in either longitudinal slot, the wheel I2 will directly control the rotation of the valve stem I I.

In Figs. 2, 3 and 4 a different type of sleeve 2l is shown which may be substituted for the sleeve I1. In the sleeve 21 the slot 28 is shown as extending about 280 about sleeve 21, a strengthening rib 30 being shown clear of the path of travel of the shaft pin through the slot 28. rI'he slot 28, as shown in sleeve 21, may extend as much as 280 about the circumference thereof, thus permitting the iiywheel to gain more s ed.

pn the modied form of sleeve shown at 31 in Figs. 5 and 6, two oppositely disposed slots 38 and 40 are shown, each slot being approximately In this case, a double ended pin 38 would extend through the flywheel shaft I4 with one end in each of the slots 38 and 40, and thus be adapted to strike simultaneously against the ends of the slots in the sleeve 3l. With this double slot in the sleeve 3'I a flywheel of heavier Weight can be provided, due to this extra strength in the sleeve 31, but obviously the flywheel could not rotate as far as with the form of sleeve shown at 21.

Other modifications and changes in the number and proportions of the parts may be made by those skilled in the art without departing from the nature of this invention within the scope of what is hereinafter claimed.

The invention described herein may be manufactured and used by or for the Government of the United States of America f or? governmental purposes without the payment of any royalties thereon or therefor.

Having thus set forth and disclosed the nature l t 2. A valve stem starting shockV wheel meansA comprising a valve stem a shaft, a sleeve attached to said valve stem, said shaft extending into said sleeve, a circumferential slot. in said sleeve, a boss on said shaft extending into said slot, a flywheel mounted on said shaft whereby` said flywheel may be rotated to rotate said shaft. and cause said boss thereon to strikev a hammer, blow against the end of the slot in said sleeve to.

initiate rotation of the valve stem, and a handle wheel mounted on the flywheel shaft.

3. A valve stem starting shock Wheel means comprising a valve stem, a shaft, a-sleeve at` tached to said valve stem, said shaft extending into said sleeve, a circumferential slot in said sleeve, a boss on said shaft extending into said slot, a flywheel mounted on said shaft whereby said flywheel may be rotated to rotate said shaft and cause said boss thereon to strike a hammer blow against the end of the slot in said sleeve to initiate rotation of the valve stem, and a handle wheel mounted on the flywheel shaft, said handle wheel being of greater diameter than said yweel to provide greater leverage in rotation 0f said flywheel.

4. A valve stern starting shock wheel means comprising a valve stem, a shaft, a sleeve ,attached to said valve stem, said shaft extending into said sleeve, a circumferential slot in said sleeve, said slot extending substantially more than halfway about said sleeve, a boss on said shaftextending into said slot, a reinforcing rib secured to the outer wall of said sleeve on both sides of said slot out of the path of said boss, and a ilywhee1 mounted on said shaft whereby said flywheel may be rotated to rotate saidy shaft and cause said boss thereon to strike a hammerV blow against the end of the slot in, said sleeve,l

to'initiate rotation of the'valve stem.

5. A valve stem starting shock wheel means comprising a valve stem, a shaft, a sleeve at-Y shaft whereby saidflyw'neel may be rotated to rotate said shaft and cause said boss means thereon to strike hammer blows againstthe ends of the slots in said sleeve to initiate rotation of the valvestem.

FREDERICK` NELSON LARSON. 

